python: Fix skipping tests if running with GnuPG < 2.1.12.

* final.py: Import 'support.py' for the side-effect of checking the
GnuPG version.
* t-data.py: Likewise.
* t-protocol-assuan.py: Likewise.
* t-wrapper.py: Likewise.
* t-callbacks.py: Avoid warning about 'support' being unused.
* t-edit.py: Likewise.
* t-encrypt-sym.py: Likewise.
* t-file-name.py: Likewise.
* t-idiomatic.py: Likewise.
* t-sig-notation.py: Likewise.
* t-trustlist.py: Likewise.
* t-verify.py: Likewise.
* t-wait.py: Likewise.
* t-keylist-from-data.py: Trim unused imports.

GnuPG-bug-id: 3008
Fixes-commit: 348da58fe0
Signed-off-by: Justus Winter <justus@g10code.com>

lang/python/tests/final.py

@@ -22,6 +22,8 @@ del absolute_import, print_function, unicode_literals
 
 import os
 import subprocess
+import support
+_ = support # to appease pyflakes.
 
 subprocess.check_call([os.path.join(os.getenv('top_srcdir'),
                                     "tests", "start-stop-agent"), "--stop"])

lang/python/tests/t-callbacks.py

@@ -23,8 +23,7 @@ del absolute_import, print_function, unicode_literals
 import os
 import gpg
 import support
-
-support.assert_gpg_version()
+_ = support # to appease pyflakes.
 
 c = gpg.Context()
 c.set_pinentry_mode(gpg.constants.PINENTRY_MODE_LOOPBACK)

lang/python/tests/t-data.py

@@ -24,6 +24,8 @@ import io
 import os
 import tempfile
 import gpg
+import support
+_ = support # to appease pyflakes.
 
 data = gpg.Data('Hello world!')
 assert data.read() == b'Hello world!'

lang/python/tests/t-edit.py

@@ -25,8 +25,7 @@ import sys
 import os
 import gpg
 import support
-
-support.assert_gpg_version()
+_ = support # to appease pyflakes.
 
 class KeyEditor(object):
     def __init__(self):

lang/python/tests/t-encrypt-sym.py

@@ -23,8 +23,7 @@ del absolute_import, print_function, unicode_literals
 import os
 import gpg
 import support
-
-support.assert_gpg_version()
+_ = support # to appease pyflakes.
 
 for passphrase in ("abc", b"abc"):
     c = gpg.Context()

lang/python/tests/t-file-name.py

@@ -23,6 +23,7 @@ del absolute_import, print_function, unicode_literals
 import os
 import gpg
 import support
+_ = support # to appease pyflakes.
 
 testname = "abcde12345"
 

lang/python/tests/t-idiomatic.py

@@ -26,6 +26,7 @@ import os
 import tempfile
 import gpg
 import support
+_ = support # to appease pyflakes.
 
 # Both Context and Data can be used as context manager:
 with gpg.Context() as c, gpg.Data() as d:

lang/python/tests/t-keylist-from-data.py

@@ -20,8 +20,6 @@
 from __future__ import absolute_import, print_function, unicode_literals
 del absolute_import, print_function, unicode_literals
 
-import os
-import sys
 import gpg
 import support
 

lang/python/tests/t-protocol-assuan.py

@@ -21,6 +21,8 @@ from __future__ import absolute_import, print_function, unicode_literals
 del absolute_import, print_function, unicode_literals
 
 import gpg
+import support
+_ = support # to appease pyflakes.
 
 with gpg.Context(protocol=gpg.constants.protocol.ASSUAN) as c:
     # Do nothing.

lang/python/tests/t-sig-notation.py

@@ -23,6 +23,7 @@ del absolute_import, print_function, unicode_literals
 import os
 import gpg
 import support
+_ = support # to appease pyflakes.
 
 expected_notations = {
     "laughing@me": ("Just Squeeze Me", gpg.constants.sig.notation.HUMAN_READABLE),

lang/python/tests/t-trustlist.py

@@ -22,6 +22,7 @@ del absolute_import, print_function, unicode_literals
 
 import gpg
 import support
+_ = support # to appease pyflakes.
 
 c = gpg.Context()
 

lang/python/tests/t-verify.py

@@ -24,6 +24,7 @@ import sys
 import os
 import gpg
 import support
+_ = support # to appease pyflakes.
 
 test_text1 = b"Just GNU it!\n"
 test_text1f= b"Just GNU it?\n"

lang/python/tests/t-wait.py

@@ -23,6 +23,7 @@ del absolute_import, print_function, unicode_literals
 import time
 import gpg
 import support
+_ = support # to appease pyflakes.
 
 c = gpg.Context()
 c.set_armor(True)

lang/python/tests/t-wrapper.py

@@ -18,6 +18,8 @@
 # License along with this program; if not, see <http://www.gnu.org/licenses/>.
 
 import gpg
+import support
+_ = support # to appease pyflakes.
 
 d0 = gpg.Data()
 d0.seek # trigger on-demand-wrapping